i installed a BlackVue DR900s-2ch in my 3, and also got the backup 6000mah b-124 battery to go with it. I have the battery plugged in to the 12v outlet, set to “cigarette” setting, but about half the time when I get in the car, I notice that the battery isn’t charging itself up. Requires me to do a power down from the screen before it starts to draw power. Is anyone else experiencing this? Problem with my car, my battery, or both? I’ve got a p3d, a nomad pad installed, and 3rd party abstract ocean puddle lights and trunk lights installed, fwiw.